Java toCapitalCase(String)

// Whitespace decimal values:
// 09, HORIZONTAL TABULATION.   10, LINE FEED.         11, VERTICAL TABULATION.
// 12, FORM FEED.               13, CARRIAGE RETURN.
// 28, FILE SEPARATOR.          29, GROUP SEPARATOR.   30, RECORD SEPARATOR.
// 31, UNIT SEPARATOR.          32, SPACE.
public static String toCapitalCase(String str) {
    boolean capitalize = true;
    char[] cha = str.toCharArray();
    char ch;

    for (int i = 0; i < cha.length; i++) {
        ch = cha[i];

        if (ch >= 'a' && ch <= 'z' && capitalize) {
            cha[i] = (char) (ch - 32);
            capitalize = false;
        } else if (ch >= 'A' && ch <= 'Z' && !capitalize) {
            cha[i] = (char) (ch + 32);
        } else {
            if ((ch >= 9 && ch <= 15) || (ch >= 29 && ch <= 32))
                capitalize = true;
        }
    }

    return new String(cha);
}